<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vuejs/vue.js"></script>
</head>
<body>
    <div id="app1">app1: {{title}}</div>
    <div id="app2">app2: {{title}}</div>
<script>
    var Vue2 = Vue.extend({
        data(){
            return{title:'hello'}
        }
    })
    var vm1 = new Vue({el:'#app1'})
    var vm2 = new Vue2({el:'#app2'})
</script>
</body>
</html>